Move /docs to Read the Docs/ reST

Add reference in troubleshooting to checking local MQTT service

docs/troubleshooting.rst

@@ -24,6 +24,13 @@ Node-RED Smart Home Control will send messages to your individual Node-RED insta
     :alt: Screenshot of warning message in Node-RED debug console
 
 
+Check Local MQTT Service
+################
+.. tip:: This is environment-specific. Most users will have a local MQTT service they have setup to act as a hub for their assisted/ smart homes.
+
+If your environment contains a local MQTT server, such as Mosquitto, please ensure this is up and running - if down then device control will likely fail.
+
+
 Check MQTT Messages
 ################
 If you're not seeing any errors in the Node-RED debug console you can use "mosquitto_sub" to check for account-specific MQTT messages. This will enable you to confirm that the Node-RED Smart Home Control API is receiving your commands, at that they are available to your Node-RED Instance::

src/interfaces/views/fragments/header.ejs

@@ -39,7 +39,7 @@
         <div class="collapse navbar-collapse" id="navbar">
           <ul class="navbar-nav mr-auto">
                 <li <% if (locals.home) {%>class="active"<% } %>><a class="nav-link" href="/">Home</a></li>
-                <li <% if (locals.docs) {%>class="active"<% } %>><a class="nav-link" href="/docs">Documentation</a></li>
+                <li <% if (locals.docs) {%>class="active"<% } %>><a class="nav-link" href="https://docs.cb-net.co.uk" target="_blank">Documentation</a></li>
                 <li <% if (locals.about) {%>class="active"<% } %>><a class="nav-link" href="/about">About</a></li>
                 <li <% if (locals.privacy) {%>class="active"<% } %>><a class="nav-link" href="/privacy">Privacy Policy</a></li>
                 <% if (user) { %>